From cbb55d02e6a6dfba3e7cab7d323ef455a4db03f2 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Fri, 19 Apr 2013 21:09:30 +0000
Subject: [PATCH] minor fix to PfmVizzer::project()

---
 panda/src/grutil/pfmVizzer.cxx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/panda/src/grutil/pfmVizzer.cxx b/panda/src/grutil/pfmVizzer.cxx
index 8048bbeb2a..f068311422 100644
--- a/panda/src/grutil/pfmVizzer.cxx
+++ b/panda/src/grutil/pfmVizzer.cxx
@@ -68,7 +68,11 @@ project(const Lens *lens) {
 
       LPoint3 film;
       if (!lens->project(LCAST(PN_stdfloat, p), film)) {
-        _pfm.set_point4(xi, yi, _pfm.get_no_data_value());
+        if (_pfm.has_no_data_value()) {
+          _pfm.set_point4(xi, yi, _pfm.get_no_data_value());
+        } else {
+          _pfm.set_point4(xi, yi, LVecBase4f(0, 0, 0, 0));
+        }
       } else {
         p = to_uv.xform_point(LCAST(PN_float32, film));
       }